Mechanics

CHEVY HESITATION ON ACCELERATION

2001 Chevrolet Monte Carlo

Engine Performance problem
2001 Chevy Monte Carlo 6 cyl Front Wheel Drive Automatic 111000 miles

The car is hesitating on acceleration
Avatar
Mac36
August 26, 2009.




Oxygen sensor
Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include: Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires

Tiny
Rasmataz
Aug 26, 2009.


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